==================================================================
BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll

read-write to 0xffff888137ffa870 of 4 bytes by task 12443 on cpu 0:
 io_get_sqe io_uring/io_uring.c:2395 [inline]
 io_submit_sqes+0x249/0xfe0 io_uring/io_uring.c:2441
 __do_sys_io_uring_enter io_uring/io_uring.c:3458 [inline]
 __se_sys_io_uring_enter+0x1e5/0x1b70 io_uring/io_uring.c:3392
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3392
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888137ffa870 of 4 bytes by task 12420 on cpu 1:
 io_sqring_full io_uring/io_uring.h:259 [inline]
 io_uring_poll+0xcd/0x1a0 io_uring/io_uring.c:2891
 vfs_poll include/linux/poll.h:88 [inline]
 __io_arm_poll_handler+0x205/0xe30 io_uring/poll.c:600
 io_arm_poll_handler+0x48b/0x5e0 io_uring/poll.c:735
 io_queue_async+0x85/0x4a0 io_uring/io_uring.c:2057
 io_queue_sqe io_uring/io_uring.c:2088 [inline]
 io_submit_sqe io_uring/io_uring.c:2340 [inline]
 io_submit_sqes+0xa26/0xfe0 io_uring/io_uring.c:2450
 __do_sys_io_uring_enter io_uring/io_uring.c:3458 [inline]
 __se_sys_io_uring_enter+0x1e5/0x1b70 io_uring/io_uring.c:3392
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3392
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00001845 -> 0x00001850

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 12420 Comm: syz-executor.3 Not tainted 6.3.0-rc7-syzkaller-00089-gcb0856346a60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
==================================================================